my cell phone will not work in China. Suggestions? Thanks so much

Tena, I think you just need to buy a Chinese sim card, according to your phone's supporting modes. what modes does your cellphone support, WCDMA, GSM or CDMA? If it supports WCDMA or GSM, you just need to buy a China Unicom's sim card. If CDMA only, you need to buy on from China Telecom.